<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
  <form method="post" action="/login">
      <input placeholder="账号" name="username"><br/>
      <input placeholder="密码" name="password"/><br/>
      <input type="submit" value="登录">
  </form>
</body>
</html>